> Note sure if this is desired behaviour or not... starting with the
> following chain setup:
[...]
> Now, if I add a chain operator to *both* chains, eg via
> -a:1,2 -ea:150
[...]
> I get nothing, despite having applied the Amplify chain operator to
> *both* chains.

Yup, this is a feature. 'cop-add' does not support adding operators to
multiple chains. I'll add a warning about this to the docs.